David Ching Pin Cheng

US Patent:

6336612, Jan 8, 2002

Filed:

Feb 13, 2001

Appl. No.:

09/783862

Inventors:

Frank Taormina - El Segundo CA
Donald C.D. Chang - Thousand Oaks CA
Kar W. Yung - Torrance CA
David C. Cheng - Palos Verdes Estates CA
William W. Mayfield - Torrance CA
John Novak, III - West Hills CA
Arthur W. Wang - Cypress CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

B64G 100

US Classification:

244158R

Abstract:

A satellite communication system has a first deployment of a plurality of satellites deployed in a medium earth orbit and two later deployments of a plurality of satellites deployed in the medium earth orbit. The first deployment is spaced so that the second deployment may be easily deployed and interleaved into the first deployment. A ground terminal is used for communicating with the satellites in the first and second deployments.

US Patent:

6460808, Oct 8, 2002

Filed:

Oct 23, 2001

Appl. No.:

10/008675

Inventors:

Frank Taormina - El Segundo CA
Donald C. D. Chang - Thousands Oaks CA
Kar W. Yung - Torrance CA
David C. Cheng - Palos Verdes Estates CA
William W. Mayfield - Torrance CA
John Novak, III - West Hills CA
Arthur W. Wang - Cypress CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

B64G 100

US Classification:

244158R

Abstract:

A satellite communication system has a first deployment of a plurality of satellites deployed in a medium earth orbit and two later deployments of a plurality of satellites deployed in the medium earth orbit. The first deployment is spaced so that the second deployment may be easily deployed and interleaved into the first deployment. A ground terminal is used for communicating with the satellites in the first and second deployments.

US Patent:

6643268, Nov 4, 2003

Filed:

Aug 23, 1999

Appl. No.:

09/379168

Inventors:

Kar W. Yung - Torrance CA
David C. Cheng - Palos Verdes Estates CA
Kenneth N. Gibson - Redondo Beach CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04L 1228

US Classification:

370254, 370216

Abstract:

A method ( ) for identifying re-routing path solutions for signals within a switch network ( ). The path solutions are subject to special constraints that provide the most desired solution for a user. The method applies an algorithm that works by transforming a global problem ( ) into many individual sub-problems ( ). The algorithm then solves the individual sub-problems ( ) systematically according to desired constraints until the global solution is met ( ). The method finds a unique state for each switch such that the overall requirements of the system are met.

US Patent:

6766987, Jul 27, 2004

Filed:

Aug 28, 2002

Appl. No.:

10/230424

Inventors:

Frank Taormina - El Segundo CA
Donald C. D. Chang - Thousand Oaks CA
Kar W. Yung - Torrance CA
David C. Cheng - Palos Verdes Estates CA
William W. Mayfield - Torrance CA
John Novak, III - West Hills CA
Arthur W. Wang - Cypress CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

B46G 100

US Classification:

244158R, 701226

Abstract:

A satellite communication system has a first deployment of a plurality of satellites deployed in a medium earth orbit and two later deployments of a plurality of satellites deployed in the medium earth orbit. The first deployment is spaced so that the second deployment may be easily deployed and interleaved into the first deployment. A ground terminal is used for communicating with the satellites in the first and second deployments.

US Patent:

6785553, Aug 31, 2004

Filed:

Apr 24, 2001

Appl. No.:

09/841110

Inventors:

Donald C. D. Chang - Thousand Oaks CA
Kar W. Yung - Torrance CA
David C. Cheng - Boston MA
Ming U. Chang - Rancho Palos Verdes CA
Frank A. Hagen - Palos Verdes Estates CA

Assignee:

The Directv Group, Inc. - El Segundo CA

International Classification:

H04Q 720

US Classification:

4554565, 4554566, 3423571, 34235714, 342358

Abstract:

A method and system for using two-way ranging navigation to accurately determine the location of a transponder platform above-Earth or a fixed or mobile target on the ground or on water. The two-way ranging navigation measurements are used as calibration references, thereby improving the positioning accuracy of GPS. The system includes GPS and a two-way ranging navigation system for taking position measurements of a target. A correction factor is determined as a function of the measurements and the GPS position is adjusted by the correction factor. The method for calibrating GPS using two-way ranging navigation involves taking a two-way ranging navigation measurement and a GPS measurement of a target, determining a correction factor as a function of the measurements, and correcting the GPS position by taking a second GPS measurement and adjusting it by the correction factor.

US Patent:

6826276, Nov 30, 2004

Filed:

Dec 3, 2001

Appl. No.:

10/005733

Inventors:

Michael Wayne Brown - Georgetown TX
David R. Cheng - Wilmington DE
Wing-Ying Stephanie Leung - Ann Arbor MI
Folu Okunseinde - Oakhurst NJ
Michael A. Paolini - Austin TX
Seema Sheth-Voss - Cambridge MA
Scott Lee Winters - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04M 500

US Classification:

37926502, 37926509

Abstract:

A method, system, and program for managing a caller profile for multiple callers across multiple call hold centers are provided. Multiple call centers preferably subscribe to a remote caller profile server that manages caller profiles that are distributable to the multiple call centers. Each of the multiple call centers utilizes caller profiles to specify services to the callers related to the caller profiles when those callers are placed on hold within the caller centers. In addition, each of the call centers monitors the activity of callers while on hold and transfers the monitored activity information to the remote caller profile server to update the caller profiles.

US Patent:

6959081, Oct 25, 2005

Filed:

Dec 3, 2001

Appl. No.:

10/005828

Inventors:

Michael Wayne Brown - Georgetown TX, US
David R. Cheng - Wilmington DE, US
Wing-Ying Stephanie Leung - Ann Arbor MI, US
Folu Okunseinde - Oakhurst NJ, US
Michael A. Paolini - Austin TX, US
Seema Sheth-Voss - Cambridge MA, US
Scott Lee Winters - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04M003/00

US Classification:

37926511, 37926601, 379309

Abstract:

A method, system, and program for expert hold queue management are provided. A call is received at a call center. The call is placed on hold in a hold queue until a representative of the call center is available to answer the call. While on hold in the hold queue, the call is transferred to an expert. In particular, the call may be transferred to a second hold queue within the first hold queue if the expert is not immediately available. Experts may include freelance experts, query based experts, and emergency response experts. Then, responsive to detecting the call at the top of the call queue, the caller is notified of an availability of a representative. The caller may select to remain with the expert or transfer to the representative.

US Patent:

7050568, May 23, 2006

Filed:

Aug 17, 2001

Appl. No.:

09/931991

Inventors:

Michael Wayne Brown - Georgetown TX, US
David R. Cheng - Wilmington DE, US
Wing-Ying Stephanie Leung - Ann Arbor MI, US
Folu Okunseinde - Oakhurst NJ, US
Michael A. Paolini - Austin TX, US
Seema Sheth-Voss - Cambridge MA, US

International Classification:

H04M 3/00

US Classification:

37926601, 37921002, 37926606

Abstract:

A method, system and product for managing a hold queue is provided. A call center receives an incoming telephone call from at least one caller and places the caller in an initial position in the hold queue. When a caller is in a hold queue at a call center, a request can be made to pause the caller's position in the hold queue. When the caller is ready to return to the hold queue or when the pause duration has expired, the caller becomes active in the hold queue.